SEASONAL AND SPATIAL VARIATION OF NITROGEN FIXATION IN THE BARROW, ALASKA, TUNDRA*
SEASONAL AND SPATIAL VARIATION OF NITROGEN FIXATION IN THE BARROW, ALASKA, TUNDRA*
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阿拉斯加、苔原巴罗固氮的季节和空间变化*
DOI：
10.2307/1550250
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
D. Schell
中科院分区：
文献类型：
--
作者：
V. Alexander;D. Schell
在阿拉斯加州巴罗附近的北极冻土带进行了一项季节性的固氮研究。在整个夏季，每隔10天在选定地点的冻土带岩芯上测量固氮率。乙炔还原技术是主要的工具。在整个仲夏的几个月里，发现了显著的固氮作用。间接证据表明，发菜属的蓝绿藻是主要的病原体，与地衣属的地衣一起，因为高效地分离出了这些还原乙炔的标本。还对亚北极高山冻土带进行了固氮调查。
A seasonal study of nitrogen fixation was carried out on the arctic tundra in the vicinity of Barrow, Alaska. Nitrogen fixation rates were measured on tundra cores at selected sites at 10-day intervals throughout the summer. The acetylene reduction technique was the principal tool. Significant nitrogen fixation was found throughout the mid-summer months. Indirect evidence suggests that blue green algae of the genus Nostoc were the principal agents along with lichens of the genus Peltigera since isolated specimens of these reduced acetylene with high efficiency. A survey of nitrogen fixation was also carried out on subarctic alpine tundra in the